Yeah, I know what 700 lumens is, and no its not 700 lumens (would be nice it it was!)

Who cares though? It is a good light to bike with - to see by when biking. Simply it works when you want to see in the dark at 15-20 mph. It has a wide flood combined with a good long range center spot. People think that I am riding a motorcycle or moped when I am using it.

I don't know the exact burn time, but is over 30 minutes. I carry two batteries. If you need more, you can buy the 900 watt version with 4 18650 batteries listed above.

The 100 watt version probably gives acceptable lighting for 15 feet in front of the bike. Yes, the 700 lumin version will hurt my eyes if I shine it at anything within 5 feet of the light - its way, way to bright to be using at less than a 5 ft range.